[jboss-jira] [JBoss JIRA] Assigned: (JBRULES-459) Literal constraint using 'null' triggers a NPE.

Literal constraint using 'null' triggers a NPE. ----------------------------------------------- Key: JBRULES-459 URL: http://jira.jboss.com/jira/browse/JBRULES-459 Project: JBoss Rules Issue Type: Bug Security Level: Public(Everyone can see) Affects Versions: 3.0.4 Environment: Windows XP SP2. Reporter: Serge Brisson Assigned To: Edson Tirelli The following triggers the problem: rule "Drops null results" when $result: Result(value == null) then retract($result); end Stack trace: java.lang.NullPointerException at org.drools.base.evaluators.ArrayFactory$ArrayEqualEvaluator.evaluate(Unknown Source) at org.drools.rule.LiteralConstraint.isAllowed(Unknown Source) at org.drools.reteoo.AlphaNode.assertObject(Unknown Source) at org.drools.reteoo.ObjectSource.propagateAssertObject(Unknown Source) at org.drools.reteoo.ObjectTypeNode.assertObject(Unknown Source) at org.drools.reteoo.Rete.assertObject(Unknown Source) at org.drools.reteoo.ReteooRuleBase.assertObject(Unknown Source) at org.drools.reteoo.ReteooWorkingMemory.doAssertObject(Unknown Source) at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source) at org.drools.common.AbstractWorkingMemory.assertObject(Unknown Source) at org.drools.jsr94.rules.StatelessRuleSessionImpl.executeRules(Unknown Source) at org.drools.jsr94.rules.StatelessRuleSessionImpl.executeRules(Unknown Source) at org.rvpf.rules.ServiceProviderTests.testStatelessSession(ServiceProviderTests.java:130) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:585) at org.testng.internal.MethodHelper.invokeMethod(MethodHelper.java:552) at org.testng.internal.Invoker.invokeMethod(Invoker.java:411) at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:785) at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:114) at org.testng.TestRunner.privateRun(TestRunner.java:695) at org.testng.TestRunner.run(TestRunner.java:574) at org.testng.SuiteRunner.privateRun(SuiteRunner.java:241) at org.testng.SuiteRunner.run(SuiteRunner.java:145) at org.testng.TestNG.createAndRunSuiteRunners(TestNG.java:901) at org.testng.TestNG.runSuitesLocally(TestNG.java:863) at org.testng.TestNG.run(TestNG.java:613) at org.rvpf.tests.FrameworkTests.main(FrameworkTests.java:132) The following is a successful work-around: rule "Drops null results" when $result: Result() eval($result.getValue() == null) then retract($result); end